<template>
  <view class="uni-searchbar">
    <view :style="{borderRadius:radius+'px',backgroundColor: bgColor}" class="uni-searchbar__box" @click="searchClick">
      <!-- #ifdef MP-ALIPAY -->
      <view class="uni-searchbar__box-icon-search">
        <uni-icons color="#999999" size="18" type="search" />
      </view>
      <!-- #endif -->
      <!-- #ifndef MP-ALIPAY -->
      <uni-icons color="#999999" class="uni-searchbar__box-icon-search" size="18" type="search" />
      <!-- #endif -->
      <input v-if="show" :focus="showSync" :placeholder="placeholder" :maxlength="maxlength" @confirm="confirm" class="uni-searchbar__box-search-input" confirm-type="search" type="text" v-model="searchVal" />
      <text v-else class="uni-searchbar__text-placeholder">{{ placeholder }}</text>
      <view v-if="show && (clearButton==='always'||clearButton==='auto'&&searchVal!=='')" class="uni-searchbar__box-icon-clear" @click="clear">
        <uni-icons color="#999999" class="" size="24" type="clear" />
      </view>
    </view>
    <text @click="cancel" class="uni-searchbar__cancel" v-if="cancelButton ==='always' || show && cancelButton ==='auto'">{{cancelText}}</text>
  </view>
</template>

<script>
  import uniIcons from "../uni-icons/uni-icons.vue";

  /**
   * SearchBar 搜索栏
   * @description 评分组件
   * @tutorial https://ext.dcloud.net.cn/plugin?id=866
   * @property {Number} radius 搜索栏圆角
   * @property {Number} maxlength 输入最大长度
   * @property {String} placeholder 搜索栏Placeholder
   * @property {String} clearButton = [always|auto|none] 是否显示清除按钮
   * 	@value always 一直显示
   * 	@value auto 输入框不为空时显示
   * 	@value none 一直不显示
   * @property {String} cancelButton = [always|auto|none] 是否显示取消按钮
   * 	@value always 一直显示
   * 	@value auto 输入框不为空时显示
   * 	@value none 一直不显示
   * @property {String} cancelText 取消按钮的文字
   * @property {String} bgColor 输入框背景颜色
   * @event {Function} confirm uniSearchBar 的输入框 confirm 事件，返回参数为uniSearchBar的value，e={value:Number}
   * @event {Function} input uniSearchBar 的 value 改变时触发事件，返回参数为uniSearchBar的value，e={value:Number}
   * @event {Function} cancel 点击取消按钮时触发事件，返回参数为uniSearchBar的value，e={value:Number}
   */

  export default {
    name: "UniSearchBar",
    components: {
      uniIcons
    },
    props: {
      placeholder: {
        type: String,
        default: "请输入搜索内容"
      },
      radius: {
        type: [Number, String],
        default: 5
      },
      clearButton: {
        type: String,
        default: "auto"
      },
      cancelButton: {
        type: String,
        default: "auto"
      },
      cancelText: {
        type: String,
        default: '取消'
      },
      bgColor: {
        type: String,
        default: "#F8F8F8"
      },
      maxlength: {
        type: [Number, String],
        default: 100
      },
      autoFocus: {
        type: Boolean,
        default: false
      }
    },
    data() {
      return {
        show: false,
        showSync: false,
        searchVal: ""
      }
    },
    watch: {
      searchVal() {
        this.$emit("input", {
          value: this.searchVal
        })
      }
    },
    methods: {
      searchClick() {
        if (this.show) {
          return
        }
        this.searchVal = ""
        this.show = true;
        this.$nextTick(() => {
          this.showSync = true;
        })
      },
      clear() {
        this.searchVal = ""
      },
      cancel() {
        this.$emit("cancel", {
          value: this.searchVal
        });
        this.searchVal = ""
        this.show = false
        this.showSync = false
        // #ifndef APP-PLUS
        uni.hideKeyboard()
        // #endif
        // #ifdef APP-PLUS
        plus.key.hideSoftKeybord()
        // #endif
      },
      confirm() {
        // #ifndef APP-PLUS
        uni.hideKeyboard();
        // #endif
        // #ifdef APP-PLUS
        plus.key.hideSoftKeybord()
        // #endif
        this.$emit("confirm", {
          value: this.searchVal
        })
      }
    }
  };
</script>

<style scoped>
  .uni-searchbar {
    /* #ifndef APP-NVUE */
    display: flex;
    /* #endif */
    flex-direction: row;
    position: relative;
    padding: 16rpx;
    background-color: #C00000;
  }

  .uni-searchbar__box {
    /* #ifndef APP-NVUE */
    display: flex;
    box-sizing: border-box;
    /* #endif */
    overflow: hidden;
    position: relative;
    flex: 1;
    justify-content: center;
    flex-direction: row;
    align-items: center;
    height: 36px;
    padding: 5px 8px 5px 0px;
    border-width: 0.5px;
    border-style: solid;
    border-color: #e5e5e5;
  }

  .uni-searchbar__box-icon-search {
    /* #ifndef APP-NVUE */
    display: flex;
    /* #endif */
    flex-direction: row;
    width: 32px;
    justify-content: center;
    align-items: center;
    color: #808080;
  }

  .uni-searchbar__box-search-input {
    flex: 1;
    font-size: 28rpx;
    color: #333;
  }

  .uni-searchbar__box-icon-clear {
    align-items: center;
    line-height: 24px;
    padding-left: 5px;
  }

  .uni-searchbar__text-placeholder {
    font-size: 28rpx;
    color: #808080;
    margin-left: 5px;
  }

  .uni-searchbar__cancel {
    padding-left: 10px;
    line-height: 36px;
    font-size: 14px;
    color: #333;
  }
</style>
